Perimidine
[化] ┗啶; 萘嵌间二氮杂苯
🗣️ 情景例句
autograph copies for the guests at the opening?
在展览开幕时为客人在书上亲笔签名呢
I usually go to bed at about midnight.
我通常在大约半夜睡觉。
Experiments have proved that children can be instructed in swimming at a very early age.
实验证明，儿童在很小的时候就可以开始学习游泳。